﻿58 
  JOURNAL 
  OP 
  THE 
  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  VOL. 
  12, 
  NO. 
  3 
  

  

  Inflorescences 
  paniculate, 
  cymose-branched, 
  axillary 
  or 
  terminal 
  on 
  defoli- 
  

   ate 
  branchlets, 
  congested, 
  not 
  over 
  3 
  cm. 
  long, 
  the 
  rachis 
  densely 
  ferrug- 
  

   inous-hairy. 
  Bracts 
  and 
  bractlets 
  oblong, 
  ferruginous-hairy, 
  very 
  small, 
  

   caducous. 
  Flowers 
  pedicellate, 
  5.5 
  mm. 
  long, 
  the 
  pedicels 
  1 
  to 
  1.5 
  mm. 
  long. 
  

   Calyx 
  subcampanulate, 
  2 
  to 
  2.5 
  mm. 
  long, 
  sparsely 
  pubescent, 
  the 
  2 
  vexillar 
  

   lobes 
  broad, 
  rounded 
  and 
  adnate, 
  the 
  lateral 
  lobes 
  narrower 
  and 
  acute, 
  the 
  

   carinal 
  lobe 
  apiculate 
  and 
  longer. 
  Petals 
  glabrous; 
  standard 
  ovate 
  or 
  

   oblong, 
  more 
  or 
  less 
  attenuate 
  at 
  the 
  base, 
  emarginate 
  at 
  the 
  apex, 
  3.6 
  mm. 
  

   long, 
  1.4 
  to 
  1.6 
  mm. 
  broad; 
  wings 
  elongate, 
  oblique, 
  more 
  or 
  less 
  attenuate 
  at 
  

   the 
  base, 
  rounded 
  at 
  the 
  apex, 
  about 
  3 
  mm. 
  long, 
  0.9 
  to 
  1.1 
  mm. 
  broad; 
  cari- 
  

   nal 
  petals 
  ovate, 
  auriculate 
  on 
  the 
  vexillar 
  side, 
  obtuse 
  at 
  the 
  apex, 
  the 
  claw 
  

   about 
  0.8 
  mm. 
  long, 
  the 
  blade 
  about 
  2.5 
  mm. 
  long, 
  1.5 
  to 
  1.8 
  mm. 
  broad. 
  

   Stamens 
  9, 
  glabrous. 
  Pistil 
  2.5 
  to 
  3 
  mm. 
  long, 
  hairy, 
  ciliate 
  on 
  the 
  margins, 
  

   the 
  ovary 
  1-ovulate 
  (?), 
  the 
  style 
  short 
  and 
  thick, 
  the 
  stigma 
  inconspicuous. 
  

  

  Type 
  in 
  the 
  U. 
  S. 
  National 
  Hebarium, 
  no. 
  381855, 
  collected 
  on 
  lava 
  fields 
  

   near 
  Cuernavaca, 
  Morelos, 
  Mexico, 
  altitude 
  about 
  1650 
  m., 
  March 
  17, 
  

   1899, 
  by 
  C. 
  G. 
  Pringle 
  (no. 
  6981). 
  

  

  Distributed 
  as 
  Dalbergia 
  glomerata 
  Hemsley, 
  but 
  the 
  leaves 
  are 
  much 
  

   smaller, 
  the 
  leaflets 
  less 
  numerous, 
  more 
  than 
  half 
  smaller, 
  pilosulous 
  on 
  both 
  

   faces, 
  the 
  flowers 
  are 
  larger, 
  the 
  standard 
  is 
  sensibly 
  longer 
  than 
  the 
  wings 
  

   and 
  keel 
  and 
  not 
  suborbiculate 
  but 
  ovate 
  or 
  distinctly 
  oblong, 
  the 
  ovary 
  is 
  

   apparently 
  1-ovulate, 
  etc. 
  

   6. 
  Dalbergia 
  tabascana 
  Pittier, 
  sp. 
  

  

  Shrub 
  (?); 
  branchlets 
  grayish, 
  sparsely 
  lenticellate, 
  at 
  first 
  minutely 
  

   grayish-pubescent. 
  

  

  Leaves 
  6 
  or 
  7-foliolate, 
  the 
  rachis 
  slender, 
  minutely 
  pilosulous, 
  3 
  to 
  3.5 
  cm. 
  

   long. 
  Leaflets 
  subcoriaceous, 
  the 
  petiolules 
  minutely 
  pubescent, 
  1 
  to 
  1.5 
  mm. 
  

   long, 
  the 
  blades 
  oblong 
  or 
  obovate, 
  rounded 
  at 
  the 
  base 
  and 
  apex, 
  1 
  to 
  2.5 
  cm. 
  

   long, 
  0.5 
  to 
  1 
  cm. 
  broad, 
  dark 
  green 
  and 
  glabrous 
  above, 
  whitish 
  or 
  rufescent, 
  

   rufo-reticulate 
  and 
  minutely 
  pilosulous 
  beneath. 
  

  

  Inflorescences 
  few-flowered, 
  subcymose, 
  axillary 
  or 
  paniculate 
  at 
  the 
  end 
  

   of 
  the 
  branchlets, 
  the 
  rachis 
  branched, 
  sparsely 
  gray-pubescent. 
  Bracts 
  

   and 
  bractlets 
  ovate-oblong, 
  pubescent, 
  not 
  over 
  1 
  mm. 
  long, 
  caducous. 
  Flow- 
  

   ers 
  pedicellate, 
  about 
  9 
  mm. 
  long, 
  the 
  pedicels 
  minutely 
  gray-pubescent, 
  

   2 
  to 
  4 
  mm. 
  long. 
  Calyx 
  tubular-campanulate, 
  3.5 
  to 
  4 
  mm. 
  long, 
  sparsely 
  

   pubescent 
  or 
  glabrescent 
  at 
  the 
  base, 
  pubescent 
  on 
  the 
  lobes, 
  subbilabiate, 
  

   the 
  carinal 
  lobe 
  apiculate, 
  not 
  much 
  longer 
  than 
  the 
  vexillar 
  ones, 
  these 
  ob- 
  

   tuse, 
  the 
  lateral 
  ones 
  smaller 
  and 
  acute. 
  Petals 
  glabrous; 
  standard 
  obovate- 
  

   oblong, 
  straight, 
  attenuate 
  and 
  subauriculate 
  at 
  base, 
  rounded 
  and 
  slightly 
  

   emarginate 
  at 
  apex, 
  the 
  claw 
  about 
  2 
  mm. 
  long, 
  the 
  blade 
  5.5 
  mm. 
  long, 
  1 
  .6 
  mm. 
  

   broad; 
  wings 
  elongate-oblong, 
  auriculate 
  on 
  the 
  vexillar 
  side, 
  subauriculate 
  

   on 
  the 
  carinal 
  side, 
  rounded 
  at 
  apex, 
  the 
  claw 
  2 
  mm. 
  long, 
  the 
  blade 
  about 
  

   5.5 
  mm. 
  long, 
  1.6 
  mm. 
  broad; 
  carinal 
  petals 
  falcate, 
  auriculate 
  on 
  the 
  vexillar 
  

   side, 
  obtuse 
  at 
  the 
  apex, 
  the 
  claw 
  2.2 
  mm. 
  long, 
  the 
  blade 
  about 
  4 
  mm. 
  long 
  

   and 
  1.8 
  mm. 
  broad. 
  Stamens 
  10, 
  monadelphous, 
  glabrous, 
  alternately 
  short 
  

   and 
  long. 
  Pistil 
  about 
  6 
  mm. 
  long, 
  glabrous, 
  the 
  ovary 
  long-stipitate, 
  4 
  or 
  

   5-ovulate, 
  the 
  style 
  oblique, 
  straight, 
  the 
  stigma 
  subcapitellate. 
  

  

  Type 
  in 
  the 
  John 
  Donnell 
  Smith 
  Herbarium, 
  collected 
  in 
  inundated 
  places 
  

   near 
  Mayito, 
  Tabasco, 
  Mexico, 
  August 
  17, 
  1889, 
  by 
  J. 
  N. 
  Rovirosa 
  (no. 
  583). 
  

  

  